The high-voltage ignition system of the ignition engine will generate strong electromagnetic waves, which will interfere with the normal operation of radio broadcasting and radio communication services around it, and cause electromagnetic pollution to the environment. The International Radio Organization began to study this type of interference source in the form of high-energy pulses and proposed measurement methods and restriction requirements. At present, this electromagnetic pollution control requirement has been included in the technical regulations of various countries in the world. After years of technical specifications, the cars running on the market have basically realized the effective control of ignition pulse electromagnetic noise.
However, with the continuous progress and development of new energy vehicle testing, a large number of applications of automotive electronic and electrical equipment, the characteristics of automotive electromagnetic interference and its impact have also undergone tremendous changes. The electromagnetic interference source of automobiles is not only the ignition system, but also various electronic and electrical equipment used in vehicles also produce electromagnetic interference.
The electromagnetic interference generated by the vehicle not only affects the radio equipment outside the vehicle, but also has an adverse effect on various electronic components inside the vehicle. In the early days, people were generally concerned about the significant impact of vehicle electromagnetic interference on the electromagnetic environment. With effective governance, this impact has been brought under control. In recent years, there have been many phenomena in automobiles that have a significant impact on the normal operation, safety and reliability of the vehicle due to electromagnetic interference inside the vehicle, which has attracted special attention. At present, people have begun to study the generation and influence of electromagnetic interference inside the vehicle and its control technology.
